This is the 5889th most frequent Polish word.
zebrano
"Zebrano" means "collected" in English.
In this sentence, 'zebrano' is used as a passive voice verb indicating that some was collected or gathered in the neutral, impersonal form.
Zebrano dowody na miejscu zdarzenia.
Evidence was collected at the scene.
Here, 'zebrano' refers to the act of collection carried out in preparation for an event.
Na zebranie mieszkańców zebrano dużo podpisów.
Many signatures were collected for the residents' meeting.
In this usage, 'zebrano' denotes the process of gathering funds, again in the impersonal passive context.